Answer:
Sing me to a baby about to go to sleep.
The eight of us go forth not back to protect our king from a foe's attack. What are we?
You use me from your head to your toes. The more I work, the thinner I grow. What am I?
I walk on 4 legs in the morning, 2 legs at noon, and 3 legs at night. What am I?
I come in different colors and shapes. Some parts of me are curvy some are straight. You can put me anywhere you like but there is only one right place for me.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.